Pantographic engraving-machine.



- 'PATENTBD DEG. 18, 1906 w. ,LEWIS 1PANTOGMPHIG BNGRAVING MACHINE.'

APPLICATION FI LED N0VA.27, 1905..

MHH INI@ l Afro/mns" y e. c. Tus Hamers Fergus CQ.. vlAsmNsron.

` PATENTE) DEG. .18, 1906.

J. fw. LEws. PANTQGRAPHIG -BNGRAVING MACHINE.

APPMOA'TIQN FILED Nov.27, 190s.- y v.

.A UofiNErs rm: onlus Ptrvurs cu.. wAsmuaroN, n, c.

I No. 839,011@

l PTLTENTIBD D5C...18,419o6. vJ. WJLB'Wls. I PANTOGMPHIC BNGRAQVING MACHINE..

APrLmATlN FILED Nov. 27. 1905.

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APPLIOAT'ION FILED 11011.21, 1905'.

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l UNITED sTA'rEs PATENT OFFICE- y JAMES'W. LEWIS, OFPHILADELPHIA,PENNSYLVANIA, ASSIGNORTO KEYSTONE TYPE FOUNDRY, OF PHILADELPHIA, PENNSYLVANIA,

lA COPARTNERSHIP.

PANToGRAPHlo ENGRAVVING-MACHINE.

-To all whom it' may concern:

Be it known that I, JAMES W. LEwrs, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements inv Pantogra hic Engravin Machines, of which the following is a speci cation.

Thisinvention relates to certain new and` y which-willreadily and eectively serve its intended purposes, and which will be capable of an almostuniversal range of work. v

In its more detail nature my invention includes a antographic parallelogram formed of pivotal y-'connected swinging rectangular members which are pivotally mounted on a stationary support, a sliding piece iitted in said parallelogram and carrying a member mountedin: and connected theretoby two centers to move on a vertical axis, this member in turn carrying four rods on which the sliding carriage, which carries the tool-carrier and the micrometer adjustment, is mounted.

` The invention also has for its object to provide a mechanism in which there are nov sliding partswhile the machine isl at work, the parts being so arran ed and constructed as to be adjustable and t e tool-carrier removable without destroying their alinement. Trackways are also provided for permitting movement of the work-carrier at forty-five degrees from central line of machine,"and means are provided whereby a separate adjustment of work-block from right to left, or viceversa, can also behad.

lVVith-other objects in viewy thanxhave been heretofore speciiied the invention also includes certain novel construction, combination, and arrangementof parts, all of which will be first described in detail and then be specifically pointed out in the appended Specification of Letters Patent. Application led November 27, 1905. Serial No. 289,215.

Patented ne. 1s, 1906.

` claims, reference bein had to the accompanying. drawings, in whic- Figure 1 is a perspective view of my invention. Fig. 2l is a front elevation thereof, the supporting-standards -being broken away. Fig. 3 is an end elevation of the parts shown in Fig. 2looking in the direction of the arrow. Fig. 4- is a top plan view of my machine. Fig. 5 is a vertical longitudinal ,section of the machine looking in the same direction as for Fig. 2. Fig. 6 is a horizontal section on the line 6 6 of Fig. 5. Fig. 7 is a detail perspective view, on an enlarged scale, of the slidin tool-carriage. Fig. 8 is an enlarged sectiona perspective on the line 8 8 of Fig. 9. Fig. 9 is a perspective view of the pantograph mechanism and its carried parts detached from the supporting parts of the machine. Fig. 10 is an enlarged perspective view of a portion of the work-holder. Fig. 1 lis a similar view, on the same scale, of the remaining portion of the work-holder. Fig. 12 is a detail perspective view of the rectangular frames and the yoke-frames separated.

Referring now tothe accompanying drawn's, in which like numerals and letters of re erence indicate like parts in all of the iigures, my machine comprises a bed-plate 1 vertical standards 2 3, bolted or otherwisev tension 1b at an angle of forty-five degrees to the longitudinal plane of the machine, to which extension 1b a trackway 7, hereinafter again referredto, is secured.

. The parts just described are mounted `on legs 8 8 to raise the machine asufficient distance above the -iioorplate 9 to enable the operator to manipulate the same.

The complete operating parts of my machine are shownl in perspective in Fig. 9, b reference to whichand toFig. 5 it will be seen that such parts comprise a main rectangular frame 1I, consisting ofparallel longitudinal horizontal bars 11a 11--b,united at IOO j their ends by vertical webs or bars-,11'3 11d, as

extended, as at 12, and terminates in a beari ing 12f to coperate with a similar bearing 12h on an arm 12g, projecting from the bar 12 in the same plane as the bar 12 and parallel thereto. The bearings 12f and 12h receive the stylus or pattern-tracer 13 and hold it always in a vertical position, thus avoiding any wabbling. The stylus or tracer 13 is frictionally held in the bearings 12f and 12h so asto be longitudinally adjustable therethrough. vThe bars 11 11b and 12 12b, respectively, Jform tracks or guideways for the sliding support members 25 and 26, respectively, which will be hereinafter again referred to.

One arm 12b ofthe frame 12 may be grad.- uated, as indicated by 12X, to enable .a quicker adjustment of the sliding frames 26 and 25 in their respective guide-'frames 12 and 11, as will be hereinafter more fully understood.

14 designates a yoke member comprising the vertical bars 14 14, which are vertically slotted, as-at 14c 14d, respectively, to permit passage ofthe front endsof the frames 11 and 12, which frames 11 and 12 are pivotally secured to the yoke 14 by pivots 16 17 and 18 19, respectively, to permit swinging movement between the frames 11 and 12 and -the yoke on vertical axes running through the pivots 16 1.7 and18 19. The yoke member 14 also comprises the horizontal bars 149 14f, which connect the bars 14 14h together near the ends. A second yoke 15 of like construction as the yoke 14 and comprising the vertical bars 15 15b, slotted, as at 15c 15d, respectively, to receive the frames 11 and 12, respectively, and the horizontal bars 15,e 15f is provided, as shown. The bars 11 and 12 are pivotally connected to the yoke 15 by pivots 20 21 and 22 23, respectively, as shown.

The frames 11 and 12, together with the yokes 14 and 15 and the rods 29 and their supports, form a pantographic frame, consisting of the bars 11 14e 12 15e and the pivots 16-18, 22, and 20, and the upper bars 29, and the bars 11b, 14f, 14, and 15f, and the pivots 17, 19, 23, and 21, together with the lower bars 29 and their supports.

Slidably mounted between the bars 11 and 11b isa frame 25, having upper and lower guides or anges 25h, as shown. The sliding frame 25 is clamped to the bars the frame 25.

`rods 29.

11 11b to be rigidly held in its set position by clamping-plates 25c 25d, secured by bolts 25, as shown. Centrally the frame 25 has a pair of pivots 25f 25g, arranged in vertical alinement, as indicated. A member 27 is fulcrumed within the sliding frame 25 on the pivots 25f and 25g.

26 designates a second slidinfJr frame slidably mounted in the frame 12 cbetween the bars 12 12b, to which it is secured by the guides or flanges 26 26, the clam ingplates 26c 26d, and the bolts 26, similar y to The frame 26 also has a pair of pivots 26f 26g, by means of which a member 28 of like construction to the member 27 is fulcrumed within the frame 26.

The members 28 and 27 are connected 4by ourparallel rods 29, one or more of which may be graduated, as at 29, if found desirable, for a purpose presently understood. The rods 29 project beyond the member 27 and are united at the'ends by a frame 30.

The sliding tool-carriage 31 (shown in perspective in Fig. 7, by reference to which and to Figs. 5 and 9 it will be seen) includes the supporting-frame 31, having apertured bearing portions or hubs 31b for receiving the A pair of parallel )lates 32 32 are bolted to the plate 31 by bolts 32 and have bevel edges 32b 32b to form guides for the adjusting-plate 33, to which the tool-carriage is detachably secured by means of a T-head35 and a pair of parallel (plates 34 34, having grooves 34 34 space apart yto form a T- slot 34b to receive the T-head 35. The plate 33 has a bearing 33, to which the micrometer-screw 36 is rigidly secured by a nut 36, as shown most clearly in Fig. 7. The screw 36 passes through a bearing 37 inl a plate 37, secured by bolts 38 to the frame 31, and the said plate 37 has a projecting ortion 37b, slotted to receive a iinger 39, Wiich is pivotally secured to the plate 37 as at 39, and bears against the micrometer-head 40. The head 40 is graduated to enable readings to be taken or adjustments made of a magnitude oi' one eight-thousandth of an inch, so that the proper depth cut can be made. The tool-carrier 35 and its carried parts may be of the ordinary construction, and the carrier 35 is prevented from dropping too far by a pin 35X on` its under side, which engages a similar pin 33X on the late 33, as shown. The plate 33 and the p ates 34 34 and the carrier 35 are cut away, as at 335 34y 35V, respectively, to permit passage of the drivebelt 41, which takes around the pulley 42, as clearly shown in Fig. 7. Secured to the frame 31 is a pair of adjusting-rods 43 43, which project loosely through the frame 30, being secured from longitudinal movement through such frame 30 by nuts 43 43h, which vhold the rods 43 43 in their adjusted positions.

The trackway 7 comprises a base-.plate 7,

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'v on which the Atracks* 7b 75 are formed.- The .AIO

tracks 7b 7b are spaced apart and extended in parallel planes at an angle of forty-five degrecs to the central vertical planes of the machine. Between the tracks 7b' 7b a T-slot 7 c is formed in the base 7 a to receive the secur- 1 ing-nut 46d of the securiny -bolt 46, `which 1 locks or firmly fastens the s iding carriage 45 to the track in its adjustedlpositions.

The carriage has track-grooves 45" 45b on its under face and a bearing-surface 458L on its upper side, to which the clamps46 46 are secured by bolts46b 46h, as shown. v

47 .designates the work-holder; which includes the base 47a to seat onthe bearingface 45a of( the carriage 45 toybe secured; thereto by the clamps 46 46, and the workholder 47 also comprises the body portionI 47, secured to the base 47a bythe bolts 47 c 47 c, whose heads lie in the countersunk apertures 47 d 47 d.

clamp member 48 is secured by screws 48 The body 47b has. a forward extension 47e, to which the work-holding 48a,.and aeatch 49 ,that is fastened pivotally f tol 'the extension 47e by .the screw 49%@ Screws 50 50 in the clam 'member 48- serve 1;

to tighten the work 100 in the clamp' niember 48. (See Fig. 10.) l

the Work-holder has an adjustment at anC ani gle of forty-five degrees t'o the central* plane i of the machine along the track 7lby movei justment in a carriage 45, thus enabling they operator to adf just lthe work from leftto .rightln Figs. 2 and j 5 to always keep it in proper-positionwith respectto the tool, as well as to permit the carrlage being moved alon the track to keep the work in the same re ative position when diHerent-sized matrixes of the same general f prop'ortions'are being cut. i 1

The bed-plate 1 has a forward extension 1m to receive the pattern-table 51, which .is secured thereto by the bolt 51, and the table 51 has its top provided wiith the recess '51h .to receive the pattern 52, which is heldin place by t a key or wedge 53, as shown. i

The frame 31a'of the tool-carriage 31 has a pair of rearwardly-proj ecting ears 31'l 31 m to receive pivot-bolts 31n 31n to pivotallylsecure the vertical bearing 55 of the belt-tightening devices between the ears 31my 31m. Rods 56 567 formed rigidly with the bearing 55, project rearwardly therefrom and terminate in bearings 568L 5611, in which a spindle 57 is held. Loose belt-pulleys 58 are mounted on the spindle 57 between the bearings 56a 56a.

59 y59 designate a second pair of arms,rse

pivotally fulcrumed, as-at 6,0, toany desired stationary extension `61. The rods 59 lcured to a bearing 60 at one end, which is l59 have bearings .59,al 59a at their other ends.,

size 'of the cut letter.

for 4receiving the spindle '57, to which they are pivotally secured.

The drive-belt 62 passes over the drive-y pulley 63a of the` motor 63, the pulleys 58 58, and through. the aperturesA 33V: 33y and around the pulley 42 lof the tool-shaft 43x to impart motion thereto, .as will be readily understoodfby reference to the drawings. y

So far as described Vthe manner in which my linvention operates will be explained best as follows: Assume the/parts to be in the position shown-in Figs. 1.', 2 and 5, with the tool T in. alinement withthe pivots 5 and 6, the

pattern P being shown under the tracer or stylus 13.J Now as the operator-graspsthe stylus 13 and' follows the lines of the pattern P therewith 'no motion will be impartedl to the cutter'other than therotary motion on its axis, 'due to the power applied through the medium of -the pulley 42 and its y.driving mechanism. -Thus a letter of zero degree will be cut on the matrix 10U-namely, a mere point. Now supposing the operator desires to-cut a letterof, say, one-half the size of the -pattern P, he then moves the sliding frame 26 along the .frame 12 from right to I left. in Fig.l 9 until the proper mark on the scale12x indicates that the sliding frame 26 From the foregoing it will .be noticed that is set for a letter one-h'alf the size of that of the pattern P. This Will bein' the position indicated by the line A in Fig. 4, and the tool-carriage 31 will he moved from left to right in Fig. 5 along the bars until the proper division-mark on the scale 29 is reached to indicate that the carriage is in the proper correlative position withthe frame 26 to place the tool in proper position to cut a let'ter one` ICO los

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its-outlines the tool will perform the same movements through a distance equal to the distance of one-half the movement of the stylus, and thereby cut a letter equal to onehalf the size of the pattern and of the same v proportions, `it being understood thatwhen `the carriage 31 and the frame -26 are moved toA their proper positions the frame 26 is clamped'byvthe screws 26e and plate 26d'to firmly hold it in such position, and the carriage 31 is held inits adjusted position by the screw-rods 43 and their nuts 43a.

Any other adjustments of the frame 26 and thefcarriage 31 may bemade to move the toolalong the line :l: y in Fig. 4 to vary the The farther the tool" T is moved. along the line :c y in Fig.l 4 away from the` centralaxis of themachinewhich passes through the pivots 5 and 6 the nearer the out letter will become in'size to the patthe point 150 in Fig. 4 to cut a letter of the same proportions as that of the pattern P, but of one-half the size, Aand that it is desired to cut va letter of the same height as before but slightly Wider. l "The operator then allows the carriage 31- to remain in its' adjusted position, but moves the frame 26 farther along the frame 12 fromL right to 'left in Fig. 5 to the position, say, indicated by the line Cin Fig. 4, thus throwing the cutter o' the line x y to a point 175, as indicated. This will cause a letter to be cut of one-half the height of the pattern and more than one-half the width thereof, thus varying the proportionate width of the letter cut Without varying its height.

Should it be desired to vary the height of the letter cut Without varying the Width thereof, when the cutte'r is at the point 150 in Fig. 4 the frame 26 is maintained at such adjustment and the carriage 31 is moved backward to any point--say the point 200 in Fig.

. 4 along the line D in Fig. 4-thus throwing the cutter-tool off the line :1; y to'the other side thereof. This will set the tool in a position to out a letter one-half the width of the pattern and more than one-half the length thereof.

By combining such adjustments just referred to letters of any proportion cani be made from zero size tofull size of pattern, depending upon'the position of the carriage 31 with respect to the line y and the central axial line passing through the pivots 5 and 6 of the machine.

l It should be understood that every time the carriage 31 is adjusted the work-holding carriage,which Slides on the tracks 7, :is-moved alongl such track and the base 47a moved along its support until the work 100 is placed in the proper position under the tool, it being understood that by varying the adjustments of the tool-carriage along the track 7 and the member 47 a along its support the Work 100 can be so set With respect to the tool as to give the proper line-space to the' letter, as well as the proper letter-space to the same.

By arranging the carriage 31 and the toolcarrier 35 in the manner shown and described the tool-carrier 35 can be removed fromzthe plate 33 to change tools or to permit another carrier to be placed in the position of the carrier 35 or to permit removal of the carrier 35 to sharpen the tool'.

By eonstructin the belt tightening devices as shown, w enever the carriage 31 is adjusted along the rods 29 or the carriage 26 is adjusted along the frame 12, or both, the arms of the belt-tightening devices will adapt themselves to such adjustments, always keeping thebelt drawn" to the desired tension, so

that `roper power can be applied to thepulley t ough the pulley 42, as will be readily understood by reference to Fig. 4 of the drawings;

From the fore oing description, taken in connection with t e accompanying drawings, it is thought the complete construction, operation, and many advanta es of my invention will be readily understoo by those skilled in the art to which it ap ertains.

Having thus descriiied my invention, what I claim, and desire to secure by Letters Patent, is-

1. In an apparatus of the class described, the combination With a stationary supporting-frame, of a pantographic frame ivotally mounted therein, said pantographic ame including a pair of parallel rectangular frames, a pair of yoke-frames for yoking said rectangular frames together and pivotally connected thereto, La pattern tracer carried by one of said rectangular frames, al supplemental frame held in said rectangular frames, a toolcarriage held on said supplemental frame, a tool-carrier held on said tool-carriage, a tool mounted on said tool-carrier, means for operating said tool, a pattern-holder and a workholder arranged to eoperate with the tracer and tool respectively, substantially as shown and described.

2. In an apparatus of the class described,

the combination with a stationary supporting-frame, of a pantographic frame pivotally mounted therein, said pantographic frame including a pair of parallel rectangular frames, a pair of yoke-,frames for yolring said rectank gular frames together and pivotally connected thereto, a pattern-tracer carried by one of said rectangular frames, asupplemental frame held in said rectangular frames, a tool-carriage held on said supplemental frame, a toolycarrier` held on said tool-carriage, a tool mounted on said tool-carrier, means for operating said tool, a pattern-holder and a Workholder arranged to coperate with the tracer and tool respectively, 'and means for locking said supplemental frame in its ad'usted positions, substantially as shown an described. 3. In an apparatus of the class described, the combination with a stationary supporting-frame, of a pantographic frame pivotally mounted therein, said pantographic frame including a pair of parallel rectangular frames,

a pair of yoke-frames for yoking said rectangular frames together and pivotally connected thereto, a pattern-tracer carried by one of said rectangular frames, a supplemental frame held in said rectangular frames, a tool- 'carriage held on said supplemental frame, a

tool-carrier held on said tool-carriage, a tool mounted on said tool-carrier, means for operating said tool, a pattern-holder and a workholder arranged to coperate with the tracer and tool respectively, means for locking said supplemental frame in its adjusted positions,

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and meansfor locking said tool-carriage to' 4. In an apparatus of the class described,

the combination with a stationary supporting-frame, of a panto raphic'i'ramepivotally mounted thereln an comprising a pair of rectangular frames ,and a pair of yoke-frames pivotally secured to the rectangular frames, a pattern-tracer carried by one of the rectangular frames, a pattern-holder supported by Cthe su porting-frame and'. cooperatively arrange with the pattern-tracer, a supplemental frame adjustably held in said rectangular frames, -means for locking said sup lemental frame to its adjusted positions on t e-rectan-` gular frames, atool-carriage held on the supplemental frame, atool carried by said tool-l carriage,means for rotating said tool, a

:Work-holder adjustably mounted on the sup-- porting-frame for cooperating .Withthe tool and scale-marks on lone of said rectangular `frames for indicating the adjustments for the supplemental frame, substantially as shown and described.

5. In an apparatus of the class described, the,V combination with a `stationary supporting-frame, of a panto aphic frame pivotally comprising a pair of rectangular frames, and a pair of yoke-frames ,pivotally secured to the rectangular frames,

apattern-.traoer carried by one ofthe rectangular frames, a pattern-holder supported by the ysupporting-frame and cooperatively arrange tal frame adjustably held in said rectangular frames, means for locking said sup lemental frame to its adjusted positions on t e rectan- .gular frames, a tool-carriage held on the supplemental `frame, a tool carried by said tool- 14 carriage, means. for rotating said tool, a Work-holder adjustably mounted on the supporting-frame for cooperating with thetool and scale-marks on one of said Vrectangular frames for indicating the adjustments of the sup lemental frame, means'for holding said too -carriage tov its adjusted positions and a tool carried-by said tool-.carriage for cooperating with the Work-holder, substantially as shown and described. y

6. In an apparatus of the class described, the combination With a stationary supportving-frame, ofta pantographic frame pivotally mounted therein `and comprising a pair of rectan ularrames, and a pair of yoke-frames pivota ly secured to the rectangular frames, a pattern-tracer carried by one ofthe rectangular frames, a pattern-holder supported by the supporting-frame and cooperatively arranged With the pattern-tracer, a supplemental frame adjustably held in said rectangular frames, means for locking said sup lemental frame to its adjusted positions on t e rectangular frames, a tool-carriage held on the supplemental frame,a.tool carried said tool-A With the pattern-tracer, a supplemen` the vdepth of cut of said tool, substantially as shown and. described.

7. In an apparatus of the class' described, the combination With a pair of parallel rectangular frames, and a pair of parallel rectangular yoke-frames pivotally uniting the firstmentioned rectangular frames, of a supplemental tool-carrying frame slidably adjustably mounted in said rectangular frames, substantially as shown and described.

l 8. In an apparatus of the class described,

the combination with a pair of parallel rectangular frames, and a pair of parallel rectangular yoke-frames pivotally uniting the iirstmentioned rectangular frames, of a su plemental tool-carrying frame slidably a justably mounted in4 said rectangluar frames, a tool-carriage slidably adjustably mounted on said supplemental frame and means for securing the tool-carriage in its adjusted positions, substantially as shown and described. 9. In an apparatus of the class described, the combination with a fixed sup ort, and a main frame pivotally mounted tverein and comprising a pair of rectangular frames, and rectangular yoke-frames pivotally unitin said rectangular frames, of al supplementa frame adjustably supported by said rectangular frames and. comprising a sliding frame held in each rectan ular frame, a rod-carrying member pivotal y mounted in each sliding frame, parallel rods carried b said rodcarrying member and projeotin eyond the rectangular frames, means on t e rectangular frames for indicating the adjustment of Vthe supplemental frame, means Jfor securing the supplemental frame to its adjusted positions on the rectangular frame, a tool-carriage mounted 'on the projecting portion of the sup lemental frame, and means cooper-` ating With-the tool-carria e and the supplemental frame Jfor locking lie tool-carriage to its adjusted positions,.substantially as shown and described.

10. In an apparatus of the class described, the combination with a'iiXed support, of a main frame pivotally mounted, therein and comprising a pairof parallel rectangular frames and rectangular yoke-frames pivotally connecting said parallel rectangular frames together, a pattern-tracer carried by one of `said rectangular frames, a pattern- IOO IIO

holder secured to the xed support below the pattern-tracer, a supplemental frame slidably adj ustablymounted iny said rectangular frames and `projecting beyond the same, a tool-carriage slidably adjustably held on said supplemental frame, means for adjusting the tool-carriage and the tool to various distances from the pivot of the main frame to -cut designs of varying proportions and varying sizes, and l a Work-holder adjustably mounted on the iixed support to be adjusted cooperatively with the tool substantially as shown and described.

11. In a machine of the class described, a main rectangular Jframe having a pair of parallel longitudinal bars and connecting Webs or bars at the ends, a second rectangular frame of similar form, a pair of yoke members having slots to receive the ends of the main and second rectangular frames, pivots carried by the yoke members for pivotally securin them to the rectangular frames, substantially as shown anddescribed.

12. In a machine of the class described, a main rectangular frame having a pair of parallel longitudinal bars and connecting Webs or bars at theends, asecond rectangular frame of similar form, a pair of yoke members having slots to receive the ends of the. main and second rectangular frames, pivots carried by the yoke members for pivotally securing them to the rectangular frame, said second rectangular frame having a pair oir' projecting portions terminating in bearings, a pattern-tracer longitudinally adjustably held in said bearings, and a cutter-tool-carry ing frame carried by the main and second rectangular Jframes, and a Work-holder coperating with the cutter-tool-carrying frame substantially as shown and described.

13. In a machine of the character stated, a pantograph-fi'ame having a pivot-axis and comprising a main rectangular Jf'rame having longitudinal bars and connecting Webs or bars at the ends, a second rectangular frame of similar form, a pair of yoke members having slots to receive the ends of the main and second rectangular rames, pivot members carried by the yoke members for pivotally securing them to the rectan ular frames, said second rectangular frame aving a 'pair of projecting portions terminating in bearings,` a pattern-tracer longitudinally adjustably held in said bearings, a supplemental frame supported by the pantograph-rame and comprismg supports adjustably mounted in the rectangular frames of the panto raph-frame, a rod-carrying member pivota ly mounted in each support on aXes parallel with the pivot-axis of the pantograph-frame, rods carried by said ro d-carrying members and projecting therefrom, and cutter devices connectin with and supported by raid rods.

14. n a machine of the character stated, a pantograph-frame having a pivot-axis and comprising a main rectangular frame having longitudinal bars and connecting Webs or 6 5 bars at the ends, a second rectangulari'rame of similar form, a pair of yoke members having slots to receive the ends ofthe main and second rectangular Jframes, pivot members carried by the yoke members for pivotally securing them to the rectan ular frames, said second rectangular frame aving a pair of projecting portions terminating in bearings, a pattern-tracer longitudinally adj ustably Iield in said bearings, a supplemental frame supported by the pantograph-frame and comprising supports adjustably mounted in the rectangular frames of the pantograph-frame, a rod-carrying member pivotally mounted in each support on axes parallel With the pivotaxis ofthe pantograph-frame, rods carried by said rod-carrying members and projecting therefrom, cutter devices connecting with and supported by said rods, said cutter devices comprising a tool-carriage consisting of a supporting-plate having supporting-bearings,vv a second plate adjustably held on said supporting-plate, micrometer devices for ladjusting said second plate on said supportingplate, a tool-carrier removably held on sald second plate, and a tool mounted in said toolcarrier.

15. In a machine of the character stated, a ixed supporting-frame, a pantograph-frame having a pivot-axis and comprising a main rectangular frame having longitudinal rods and connecting Webs or bars at the ends, a second rectangular frame of similar form, a pair of yoke members having slots to receive the ends of the main and second rectangular frames, pivot members carried by the yoke members for pivotally securing them to the .rectangular frames, said second rectangular frame having a pair of projecting portions terminating in bearings, a pattern-tracer longitudinally adjustably held in said bearings, a supplemental frame supported by the pantograph-rame and comprising supports adjustably mounted in the rectangular frames of the pantograph frame, a rod-carrying member pivotally mounted in each support on axes parallel with the pivot-axes of the pantograph-frame, rods carried by said rodcarrying members and projecting therefrom, cutter devices connecting with and supported by said rods, said cutter devices comprising a tool-carriage consisting of a supportin -platc having supporting-bearings, a secon adjustably held on said supporting-plate, micrometer devices for adjusting said second plate on said supporting-plate, a tool-carrier removably held on said second plate, a tool mounted in said tool-carriage, and a Workholder adjustably mounted in said` iiXed supporting-frame, substantially as shown and described.

16. An apparatus of the class described, comprising in combination With a main pantographic frame having a pivot-axis, of a supplemental frame, supported by the pantographic frame and comprising supports adplate Y IOO IIO

`justably mounted in the panto aphc frame,

` a rod-carrying kmember pivotal mounted in `each support on van yams .para lel with the,l pivot-axis of. the Vpantographic frame, rods carriedby said rod-carrying members and 4projecting therefrom, and' cutter devices connected With and supported by said rods, sub-3 stantiallyas shown and described.

17. An apparatus "of the class described,

ro comprising 1n combination with a iiXed suportmg-i'rame, a main` pantographic frame -iillcrumed therein, a tracerA carried by said main pantographicframe, a pattern-holder supported by said fixed sup orting-rame to I 5 ,coperate With the tracer, o asupplementahl frame supported by the main pantographicy frame andcomprising supports adjustablyy mounted inthe pantographic frame, a rodvcarrying member pivotally ymounted in each j zo'support on an axis parallel With the pivotaXis of the pantographic frame,rods carriedE by said rod-carrying members and proj ectin ftherfrom, cutter devices connected With and supported. byl said rods, said 'cutter devices 2 5 comprising a tool-carriage consisting of a supporting-plate having supporting-bearings, a= secondplateadjustably supported on said y bearing-plate', micrometerV devices for adjust- -`ing said second plate on said supporting-plate,

3oa tool-carrier removably held on. said sec- 40 platessecured to said framefan adjustingplate held to said frame by said guide-plates,l micrometer devices carried by said adjusting-plate and said supporting-frame for adjusting theadjusting-platebn the support'- ing-frame, a slotted holder on said "second plate, a tool-carrier removably connected' thereto, means for limiting the .movement of the tool-carrier, and a tool rotatably mounted in the tool-carrier. v

19. In a machine ofthe `class described,l the combination `With supporting-rods of a tool-carriage comprising a supporting-frame` having bearings therein to receive said rods, a guide on saidLsupporting-f'rame, an adjust- 5 5 ing-plate held in said guide onsaid support-y ing-frame, micrometer-adjusting devices connecting said adjusting-plate. with said sup-l` porting-frame 4to adjust the adjusting-plate` alongthe supporting-frame, parallel grooved l6o members forming a T-slot'secured to the said last-named plate,' a `tool-carrier having a T- head for entering said T-slot to hold it against the guides, a pin in the bottom of said tool-carrer, a' second pin on said second plate, l

rier to limit the downvvard movement thereof, a cutting-tool rotatably mounted in said tool-carrier, substantially as shown and-described.

1`v20. In alv m'chine of... the class described, the 'combinatonwith supporting-rods of a tool-carrier, comprising a supporting-frame vhaving bearlng portions to receive said rods,

a pair or plates removably secured thereto and having beveled edges to form guideways, a plate held against saidsupporting-frame by said guides, a micrometric adjusting means connecting .said last-named plate with said supporting-frame to adjust the plate on ythe frame, and" a tool-carrier-receiving member secured to said last-named plate substantially asshown and described.4

21. In an apparatusof the class described,

the combination Witha stationary supporting frame, of a pant'ographic frame fulcrumed therein and comprising a pair of par.- allel rectangular frames, a pair of parallel yoke-frames pivotally uniting the rectangular frames ,a tracer carried by one of said rectangular frames, a sliding support adjustably held in each rectangular frame, means for securing said sliding supports from movement,

a rod-carrying member fulcrumed in each sliding support, parallel rods joining said rod-carrying members, a connecting-frame for joining the lfree, ends of said rods, a carriage mountedon said rods, a cutter-tool carried thereby, a pattern-holder and a Workholder supported on said stationary support to'co'perate with the tracer and the cuttertool, respectively, substantially as shown and described. t

. 22. In an apparatus ofthe class described, the `combination with astationar supportmg frame, ofl a .pantographic ame fulcrumed therein and comprising a pair of parallel rectangular frames, and a pair of parallel I OD -yoke'-frames pivotally Auniting the rectangusupporting-frame, a plate slidably mounted thereon, a micrometer mechanismv connecting said plate and its supporting-frame by meansof which the plate can be adjusted on the supporting-frame, a grooved member `secured to said plate and spaced apart to form a T-groove, aV tool-'carri er having a T-head to enter said T-groove, means for limiting the movement of said tool-carrier on said grooved member, a tool rotatabl mounted in the carrier, and a pattern-ho der and a Work-holder. supported on said stationary i 5 for cooperating with the pin on the tool-carl support to coperate with the tracer and the cutter-tool, respectively, substantially f as shown anddescribed.

23. In. an apparatus of the class described,I the combination With a stationary support-v ing -rame, `of a' pantographic -frame lfulcrumed therein, and comprising al pair of parallel rectangular frames, anda pair of paral.- lel frames pivotally uniting the rectangular frames, a tracer carried by'one of said rec. tan ular frames, a sliding support adjustably hel in each rectangular frame, `means for securing said sliding su ports from movement, a rod-carrying member ulcrumed in each sliding support, parallel rods connecting said, rod-carrying members and projecting be-` yond` the same, a connecting-frame for thel free ends of said rods, acarriage mounted on said rods, a cutter-tool carried by the 'carriage and adjustable thereon, `and a pattern-1 holder and. a Work-holder support on said. stationary support to cooperate 'with thej tracer and the cutter-tool respectively.

24. -In an apparatus ofthe class described,: the combination With a stationary supporting frame, of .a antlographic frame fulcrumed therein an comprising'a pair of parallel rectangular frames, and a pair'ofparal-V lel yoke-frames pivotally uniting the rectangular frames, a tracer carried by one of said: rectangularl frames, asliding'support adjust- -ably held in each rectangular frame, means for securing said sliding supports irommovement, -a .rod-carrying member .fulcrumed in. each sliding support, parallel. rods connecting said rod-carryingmembers and projecting beyond the same, a. connecting-frame for the free ends of said rods, a carriage mountedoni said rods,.a cutter-tool carried by the car-; riage, connections between the carria e andl the rod-connectingzframe for holding t 'e carriage in its adjusted positions along the rods,

substantially as shoWnand described.

25. In an apparatus of the class described the combination With a pantogra hmechanism, of a tool-carriage, means for olding said tool-carriage at various adjustments on the.

pantograph mechanism to permit letters of different sizes to be cut, arotary tool carried. by said tool-carriage, drive-motor mechanism for imparting. motion to said tool, said drive-motor mechanism comprising an end-i less belt and a drive-motor therefor, :and means connected .with the tool-carriage and the drive-motor mechanism for maintaining the drive-belt alWaysat its proper tension regardlessof the position of the tool-carriage, said last-namedmeans comprising parallell arms pivotally secured to the tool-carriage and projectingA rearwardly therefrom and'` vparallel arms pivotally secured to the drive: mechanism and to the iirst-mentioned parallel arms, and ulleys loosely mounted at the connection ofp the first-mentioned with the second-mentioned parallel arms around which ,pulleysrthe endless -belt takes substantiallyas shownand described.

.26. :In an apparatus of the vclass described, A

the combination with a stationary vsupporting-frame, ofa pantographic frame pivotally mounted in said supporting-frame, on a ma- -jor verticalaxis, said pantographic frame comprising a air of rectangular arallel Jframes, parallei)yoke-frames pivotal y uniting said first-mentioned parallel frames at their ends, one of said rectangular frames having extending arms terminating in bear- '.ings, a tracer vertically mounted in said bearings for longitudinal adjustment, a slid- .ingirame mounted ineach rectangular frame, -.clamping devices carried by said sliding frames for .securingy them to their respective rectangular frames yin their adjusting positions, a rod-carrying member pivotally mounted in each sliding frame on an axis parallel to the major axis of the pantovraphic lirough said rod carrying members and secured Athereto and projectin beyond the same, a connecting-frame for t e free ends of therods to which said rods are connected, a carriage having bearing portions for receiving suclr rods, said carriage including a supportingframe, a plate adjustable thereon, microme-` ter devices-for adjusting said plate, a.tool-' carrier removably secured` to said plate, .a .toolfrotatably mounted in said tool-carrier, a pair of adjusting-rods secured to the supporting-frame of the carriage and projecting rear- Wardlytherefrom through the connecting- `frame of the rods, means for securing said .adjusting-rods to said connectin -frame to positions hold the carriage in its adjuste along the first-mentioned rods, a patternholder secured to the supporting-frame be- ,neath the tracer, said supporting-frame including trackways, a carriage adjustably mounted on said trackways, said last-named carriage havin clamp-guides arranged at an angle of fortyve degrees to the trackway, a work-holder adjustably held in said clampguides on said last-named carriage, for cooperating With said cutter-tool, substantially as shown and described.

27. In an apparatus of the class described, the combination With a stationary supporting-frame, of a pantographic frame pivotally mounted in said supporting-frame on a major vertical axis, said pantographic frame comprising a pair of parallel lirames,parallel yoke-frames pivotally uniting said irst-menj tioned parallel frames at their ends, one oi said rectangular frames having extending arms terminating in bearings a tracer vertically mounted in said bearings for longitudinal adjustment, a sliding frame mounted in each rectangular frame,` clamping devices carried by said sliding frames for securing them to their respective rectangular `frames IOO IIOi

I in their adjusted positions, a rod-carrying member pivotally mounted in. each sliding frame on an aXis parallel to the maj oraXis of the pantographic frame, a plurality of rods passmg lthrough said rod-carrying members and secured thereto and projecting beyond the same, a connecting-frame for the free ends of the rods to which said rods kare connected, a carriage-having bearing portions for receiving such rods, said carriage including a supporting-frame,a plate adjustable thereon, micrometer. devices for adjusting said plate, a `tool-carrier removably secured to saidyplate,a tool rotatably mounted in said tool-carrier, a pair of adjusting-'rods secured to saidnsupporting-frame of the carriage. and projecting rearwardly therefrom and through the connecting-frame of thev j. rods, means for securing said adjusting-rods to said 'connecting-frame to hold 'the carriage in its adjusted positions along the iirst-mentioned rods, a pattern-holdersecured to the supporting-frame beneath the stylus, said supporting-frame including trackways, a carriage adjustably mounted on said trackway,

said last named carriage having clampguides arranged at an. anglejof forty-five degrees to the trackway, a Work-holder adjustably held on said last-named carriage, for cooerating with saidv cutter-tool, a pair .of parya el armsl secured, to said first-mentioned carriage and projecting rearwardly therefrom, a pair of loosepulleys adjustably held Y in the free ends of said arms, a second pair of arms pivotally secured at one end to said first-named arms at the free ends of said firstmentioned arms, a drive mechanism, vsaid Hsecond pair of arms being pivotally mounted j at their other ends adjacent said drive mechanism, said-.drive mechanism including a drive-motor, a drive-shaft including a pulley, said cutter-tool ,having a pulley, and an endless belt taking over all 'of said pulleys ysubstantially as shWn and described.

28. In an apparatus of the class described,

the combination with `a support, of a pantographic frame operatively mounted therein, l an including parallel rectangular frames 29. In a machine of the class described, a

main rectangular frame having parallel longitudinal bars, connecting Webs or bars at the ends thereof, a second rectangular frame of similar form, yoke members having slots to receive the ends of the main and second rectangular frames, means pivotally connecting the yoke members to the rectangular frames, a supplemental tool-carrying frame supported by the rectangular frames, and a stationary supporting-frame for the Whole, substantially as shown and described.

30. In anapparatus of the class described,

the combination With a support, of a pantographic parallelogram pivotally mounted therein, and comprising rectangular frames pivotally secured together, a pattern-tracer carried by one of saidrectangular frames, a

gram, a tool-carriage held on said supplemental frame, a tool carried by the tool-carriage, means for operating the tool a patternholder and a Work-holder arranged to coperate With the tracer-and tool, and means for adjusting the cutter-tool and the sup lemental frame to vary the proportions of t e work cut. f

JAMES W. LEWIS.

Witnesses:

Jos. ALLEN Por'rs,y

FRANK H. BENHAM.

`supplemental frame held in said parallelo- 

